507565 has 4 divisors (see below), whose sum is σ = 609084. Its totient is φ = 406048.

The previous prime is 507557. The next prime is 507571. The reversal of 507565 is 565705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 145161 = 602^2 + 381^2 .

It is a cyclic number.

It is not a de Polignac number, because 507565 - 2³ = 507557 is a prime.

It is a Duffinian number.

507565 is a lucky number.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50752 + ... + 50761.

It is an arithmetic number, because the mean of its divisors is an integer number (152271).

2⁵⁰⁷⁵⁶⁵ is an apocalyptic number.

It is an amenable number.

507565 is a deficient number, since it is larger than the sum of its proper divisors (101519).

507565 is a wasteful number, since it uses less digits than its factorization.

507565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101518.

The product of its (nonzero) digits is 5250, while the sum is 28.

The square root of 507565 is about 712.4359620345. The cubic root of 507565 is about 79.7683402361.

The spelling of 507565 in words is "five hundred seven thousand, five hundred sixty-five".